<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="showAddRoleDialog"> 添加角色 </el-button>
        </el-col>
      </el-row>
      <el-table :data="rolesList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template v-slot:default="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '','vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{ item1.authName }}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <!-- 通过for循环渲染二级权限 -->
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop','vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{ item2.authName }}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <!-- 通过for循环渲染三级权限 -->
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      :class="[i3 === 0 ? '' : 'bdtop']"
                      v-for="(item3, i3) in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row,item3.id)"
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template v-slot:default="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini"
            @click="showEditRolesDialog(scope.row.id)"
              >编辑</el-button
            >
            <el-button type="danger" icon="el-icon-delete" size="mini"
            @click="removRolesById(scope.row.id)"
              >删除</el-button
            >
            <el-button type="warning" icon="el-icon-setting" size="mini"
            @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分配权限的对话框 -->
    <el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="30%"
  @close="setRightDialogClosed"
  >
  <el-tree
  :data="rightslist"
  :props="treeProps"
  show-checkbox
  node-key="id"
  default-expand-all
  :default-checked-keys="defKeys"
  ref="treeRef"
  >
</el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
<!-- 添加角色的对话框 -->
<el-dialog
  title="添加角色"
  :visible.sync="addRolesDialogVisible"
  width="50%"
  @close="rolesDialogClosed"
  >
   <el-form
        :model="addRoles"
        :rules="addRolesRules"
        ref="addRolesRef"
        label-width="80px"
      >
        
        <el-form-item prop='roleName' label="角色名称" >
          <el-input v-model="addRoles.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述"  prop='roleDesc'>
          <el-input v-model="addRoles.roleDesc"></el-input>
        </el-form-item>
        
      </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addRolesDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addRole">确 定</el-button>
  </span>
</el-dialog>
 <!-- 修改角色的对话框 -->
    <el-dialog
  title="修改角色信息"
  :visible.sync="editRolesDialogVisible"
  width="50%"
  @close="editRolesDialogClosed"
  >
  <el-form ref="editRolesRef" :model="editRoles" label-width="80px" :rules="editRolesRules">
  <el-form-item label="角色名称" prop="roleName">
    <el-input v-model="editRoles.roleName"></el-input>
  </el-form-item>
    <el-form-item label="角色描述" prop="roleDesc">
    <el-input v-model="editRoles.roleDesc" ></el-input>
  </el-form-item>
   
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editRolesDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editRolesInfo">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  name: "Roles",
  components: {},
  directives: {},
  data() {
    return {
      // 所有角色列表数据
      rolesList: [],
      //控制分配权限对话框的显示与隐藏
      setRightDialogVisible:false,
      // 所有权限的数据
      rightslist:[],
      //树形控件的属性绑定对象
      treeProps:{
          label:'authName',
          children:'children',
      },
      //默认选中的节点id值数组
      defKeys:[],
      //即将分配权限角色的id
      roleId:'',
      //控制添加角色对话框是否显示
      addRolesDialogVisible:false,
      //添加角色时的表单数据
      addRoles:{
        roleName:'',
        roleDesc:''

      },
      //添加角色的规则
      addRolesRules:{
         roleName:[
              { required: true, message: '请输入角色名称', trigger: 'blur' },
          ],
          roleDesc:[
            { required: true, message: '请输入角色描述', trigger: 'blur' },
          ]
      },
      //控制修改角色对话框是否显示
      editRolesDialogVisible:false,
      //修改角色时的表单数据
      editRoles:{},
      //修改角色的规则
      editRolesRules:{
         roleName:[
              { required: true, message: '请输入角色名称', trigger: 'blur' },
          ],
          roleDesc:[
            { required: true, message: '请输入角色描述', trigger: 'blur' },
          ]
      },

    };
  },
  created() {
    //获取所有的角色
    this.getRolesList();
  },
  mounted() {},
  methods: {
    //获取所有的列表
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.rolesList = res.data;
      console.log(this.rolesList);
    },
    //根据id删除对应的权限
    async removeRightById(role,rightId){
        //弹框提示用户是否要删除
        const confirmResult=await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if (confirmResult!=='confirm') {
            return this.$message.info('取消了删除！')
        }
        const {data:res}=await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if (res.meta.status!==200) {
            return this.$message.error('删除权限失败！')
        }
        // this.getRolesList()
        role.children=res.data
    },
    //展示分配权限的对话框
    async showSetRightDialog(role){
        this.roleId=role.id
        // 获取权限数据
        const {data:res} =await this.$http.get('rights/tree')
        if (res.meta.status!==200) {
            return this.$message.error('获取权限列表失败！')
        }
        // 把获取到的权限数据保存到data中
        this.rightslist=res.data
        console.log(this.rightslist)


        //递归获取三级节点的id
        this.getLeafKeys(role,this.defKeys)


        this.setRightDialogVisible=true
    },
    //通过递归的形式获取角色下所有的三级权限的id，并保存到defKeys数组中
    getLeafKeys(node,arr){
        //如果当前node节点不包含children属性，则是三级节点
        if (!node.children) {
            return arr.push(node.id)
            
        }
        node.children.forEach(item =>
            this.getLeafKeys(item,arr)
        )
    },
    //监听分配角色对话框的关闭事件
    setRightDialogClosed(){
        this.defKeys=[]
    },
    //点击为角色分配权限
    async allotRights(){
        const keys=[
            ...this.$refs.treeRef.
            getCheckedKeys(),
            ...this.$refs.treeRef.
            getHalfCheckedKeys()
        ]
        const idStr=keys.join(',')
        const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,
        {rids:idStr})
        if (res.meta.status!==200) {
            return this.$message.error('分配权限失败！')
        }
        this.$message.success('分配权限成功！')
        this.getRolesList()
        this.setRightDialogVisible=false
    },
    //点击显示添加角色对话框
    showAddRoleDialog(){
      this.addRolesDialogVisible=true
    },
    //点击确定添加角色
    addRole(){
       this.$refs.addRolesRef.validate(async valid=>{
            console.log(valid)
            if (!valid) {
                return
            }
             const {data:res}=await this.$http.post('roles',this.addRoles)
            if (res.meta.status!==201) {
                return this.$message.error('添加角色失败！')
            }
            this.$message.success('添加角色成功！')
            //隐藏添加角色的对话框
            this.addRolesDialogVisible=false
            //重新获取角色列表数据
            this.getRolesList()


       })
    },
    //监听添加用户对话框关闭
    rolesDialogClosed(){
      this.$refs.addRolesRef.resetFields()
    },
    //点击显示修改角色对话框
    async showEditRolesDialog(id){
      const {data:res} =await this.$http.get('roles/'+id)
      if (res.meta.status!==200) {
        return this.$message.error('查询角色信息失败')
      }
      
      this.editRoles=res.data
      console.log(this.editRoles)
      this.editRolesDialogVisible=true
    },
    //监听修改角色对话框关闭事件
    editRolesDialogClosed(){
      this.$refs.editRolesRef.resetFields()
    },
    //点击确定修改角色信息
    async editRolesInfo(){
      this.$refs.editRolesRef.validate(async valid=>{
        if (!valid) {
          return
        }
      const {data:res} =await this.$http.put('roles/'+this.editRoles.roleId,
      {roleName:this.editRoles.roleName,roleDesc:this.editRoles.roleDesc})
       if (res.meta.status!==200) {
        return this.$message.error('修改角色信息失败！')
      }
      this.$message.success('修改角色信息成功！')
      this.editRolesDialogVisible=false
      this.getRolesList()
      })
    },
    //根据id删除对应的角色信息
    async removRolesById(id){
      // 询问用户是否删除数据
       const confirmResult=await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        //如果用户确认删除，则返回值为字符串 confirm
        //如果用户取消删除，则返回值为字符串 cancel
        // console.log(confirmResult)
        if (confirmResult!=='confirm') {
          return this.$message.info('已经取消删除')
        }
        // console.log('确认了删除')
        const {data:res}=await this.$http.delete('roles/'+id)
        if (res.meta.status!==200) {
          return this.$message.error('删除角色失败！')
        }
        this.$message.success('删除角色成功！')
        //重新获取角色列表数据
            this.getRolesList()

    },
  },
};
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
.el-table{
  margin-top: 15px;
}
</style>